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Online since: July 2011
Authors: Mei Gao, Yang Cheng Li
The three natural ground motions are El Centro-EW (1940), WufengNE-NS (1999), and YunlincitySE-NS (1999).
The responses of El Centro-EW along Y-direction are less than the others.
References [1] Cao Wanlin, Fan Yanfei, Zhang Jianwei, et al: Earthquake Engineering and Engineering Vibration Vol. 1(2007), p.81-84, in Chinese
[5] Hou Guangyu, Chen Binlei, Miao Qisong, et al: Journal of Building Structures Vol. 2(2006), p.1-9, in Chinese
[8] Xu Peifu, Fu Xueyi, et al: Structural design for complex high-rise building (China architecture & building press, Beijing 2005), in Chinese.
The responses of El Centro-EW along Y-direction are less than the others.
References [1] Cao Wanlin, Fan Yanfei, Zhang Jianwei, et al: Earthquake Engineering and Engineering Vibration Vol. 1(2007), p.81-84, in Chinese
[5] Hou Guangyu, Chen Binlei, Miao Qisong, et al: Journal of Building Structures Vol. 2(2006), p.1-9, in Chinese
[8] Xu Peifu, Fu Xueyi, et al: Structural design for complex high-rise building (China architecture & building press, Beijing 2005), in Chinese.
Online since: June 2018
Authors: François Brisset, Tahar Abid, Thierry Baudin, Anne Laure Helbert, Mosbah Zidani, Hichem Farh, Toufik Djimaoui, Mohamed Chaouki Nebbar
Farh4, A.L.
We take note that this texture has previously been observed by Langouche et al., [16] for steels in general and by Montesin et al., [17] for pearlitic steels intended for the manufacture of steel cord (drawn wire from 1.37 to 0.2 mm).
Kanetsuki et al. [18] observed in their study concerned the pearlitic steels (drawn wire from 16 to 2 mm), circular textures {112} <110> on the surface and {110} <110> on the undercoat.
ZIAR, A.L.
LOUDJANI, A.L.
We take note that this texture has previously been observed by Langouche et al., [16] for steels in general and by Montesin et al., [17] for pearlitic steels intended for the manufacture of steel cord (drawn wire from 1.37 to 0.2 mm).
Kanetsuki et al. [18] observed in their study concerned the pearlitic steels (drawn wire from 16 to 2 mm), circular textures {112} <110> on the surface and {110} <110> on the undercoat.
ZIAR, A.L.
LOUDJANI, A.L.
Online since: April 2019
Authors: Samir Touili, Ahmed Alami Merrouni, Youssef El Hassouani, Abdel Illah Amrani
For instance, Malvoni et al. [14] used the System Advisor Model (SAM) and PVsyst to investigate the performance of 960 KWp PV plant in southern Italy under the Mediterranean climate.
Sharma et al. [15] used PVsyst to estimate the annual energy yield of a 190 KWp grid interactive solar photovoltaic power plant installed at Khatkar-Kalan, India.
Okello et al. [16] also used PVsyst to simulate a 3.2 kWp grid-connected PV system in Port Elizabeth, South Africa and compared between the simulation and the actual results of the plant, they found that the results were similar.
[10] Bouaichi A., Alami Merrouni A., El Hassani A., Naimi Z., Ikken B., Ghennioui A., Benazzouz A., El Amrani A., and Messaoudi C., Experimental evaluation of the discoloration effect on PV-modules performance drop, Egypro, 2017, vol. 119, pp. 818-827
[23] Cheikh El Banany Elhadj Sidi, Mamadou Lamine Ndiaye, Menny El Bah, Abdoulkarim Mbodji, Ababacar Ndiaye, and Papa Alioune Ndiaye., Performance analysis of the first large-scale (15 MWp) grid-connected photovoltaic plant in Mauritania, Energy Convers Manag, 2016, vol. 119, pp. 411-421
Sharma et al. [15] used PVsyst to estimate the annual energy yield of a 190 KWp grid interactive solar photovoltaic power plant installed at Khatkar-Kalan, India.
Okello et al. [16] also used PVsyst to simulate a 3.2 kWp grid-connected PV system in Port Elizabeth, South Africa and compared between the simulation and the actual results of the plant, they found that the results were similar.
[10] Bouaichi A., Alami Merrouni A., El Hassani A., Naimi Z., Ikken B., Ghennioui A., Benazzouz A., El Amrani A., and Messaoudi C., Experimental evaluation of the discoloration effect on PV-modules performance drop, Egypro, 2017, vol. 119, pp. 818-827
[23] Cheikh El Banany Elhadj Sidi, Mamadou Lamine Ndiaye, Menny El Bah, Abdoulkarim Mbodji, Ababacar Ndiaye, and Papa Alioune Ndiaye., Performance analysis of the first large-scale (15 MWp) grid-connected photovoltaic plant in Mauritania, Energy Convers Manag, 2016, vol. 119, pp. 411-421
Online since: May 2011
Authors: Zhi Hua Wang, Chong Shi Gu, Guo Xing Chen
According to Stoke’s fifth-order wave theory, Bai et al.[5] compared the seismic response of bridge pier under hydrostatic force with that under water wave load, in which the wave force obtained by Morison’s formula was applied to the bridge pier as a distributed force.
(a) El Centro wave (b) Taft wave (c) Nanjing artificial wave Fig.6 The displacement time-histories of the input earthquake waves The seismic response of the bridge pier under ground motion referred to the initial boundary.
(a) El Centro wave (b) Taft wave (c) Nanjing artificial wave Fig.8 Peak shear force of the bridge pier Table.4 Peak shear force of bridge pier and FSI influence coefficient Input displacement Hydrostatic status(m) Water-flow status(m) Kf (%) El Centro wave A=25cm 1602 1725 7.68 A=50cm 2755 2932 6.4 Taft wave A=25cm 1583 1710 8.0 A=50cm 2707 2876 6.24 Nanjing artificial wave A=25cm 828 905 9.9 A=50cm 1064 1149 8.0 Bending moment response of bridge pier Fig. 9 gives the peak bending moment of bridge pier.
(a) El Centro wave (b) Taft wave (c) Nanjing artificial wave Fig.9 Peak bending moment of the bridge pier Table.5 Peak moment response of bridge pier and FSI influence coefficient Input displacement Hydrostatic action (kN·m) Water-flow status (kN·m) Km (%) El Centro wave A=25cm 1913 2203 15.16 A=50cm 3558 3877 8.97 Taft wave A=25cm 1649 1765 7.0 A=50cm 3232 3441 6.47 Nanjing artificial wave A=25cm 969 1112 14.75 A=50cm 1133 1257 10.9 Influence of water level on bridge pier Generally, the water level surrounding the bridge pier kept changing.
[2] Yamada, Y., Iemura, H., Kawano, K., et al.
(a) El Centro wave (b) Taft wave (c) Nanjing artificial wave Fig.6 The displacement time-histories of the input earthquake waves The seismic response of the bridge pier under ground motion referred to the initial boundary.
(a) El Centro wave (b) Taft wave (c) Nanjing artificial wave Fig.8 Peak shear force of the bridge pier Table.4 Peak shear force of bridge pier and FSI influence coefficient Input displacement Hydrostatic status(m) Water-flow status(m) Kf (%) El Centro wave A=25cm 1602 1725 7.68 A=50cm 2755 2932 6.4 Taft wave A=25cm 1583 1710 8.0 A=50cm 2707 2876 6.24 Nanjing artificial wave A=25cm 828 905 9.9 A=50cm 1064 1149 8.0 Bending moment response of bridge pier Fig. 9 gives the peak bending moment of bridge pier.
(a) El Centro wave (b) Taft wave (c) Nanjing artificial wave Fig.9 Peak bending moment of the bridge pier Table.5 Peak moment response of bridge pier and FSI influence coefficient Input displacement Hydrostatic action (kN·m) Water-flow status (kN·m) Km (%) El Centro wave A=25cm 1913 2203 15.16 A=50cm 3558 3877 8.97 Taft wave A=25cm 1649 1765 7.0 A=50cm 3232 3441 6.47 Nanjing artificial wave A=25cm 969 1112 14.75 A=50cm 1133 1257 10.9 Influence of water level on bridge pier Generally, the water level surrounding the bridge pier kept changing.
[2] Yamada, Y., Iemura, H., Kawano, K., et al.
Online since: September 2019
Authors: Boubaker Benhaoua, Abdelkader Hima, Saied Chahnez, Barani Djamel, Segueni Leila, Achour Rahal, Atmane Benhaoua, Brahim Gasmi, Allag Nassiba
El Oued, 39000 El Oued, Algeria
2Unité de Développement des Energies Renouvelables dans les Zones Arides (UDERZA), Univ.
El-Oued, 39000 El Oued, Algeria 3Laboratoire de Physique des Couches Minces et Applications (LPCMA), Univ.
Acknowledgment This study was supported in part by RERUAZ Renewable Energy Research Unit in Arid Zones El-Oued University.
Barsoni, A.L.
Esro et al., “Solution processed SnO2:Sb transparent conductive oxide as an alternative to indium tin oxide for applications in organic light emitting diodes,” J.
El-Oued, 39000 El Oued, Algeria 3Laboratoire de Physique des Couches Minces et Applications (LPCMA), Univ.
Acknowledgment This study was supported in part by RERUAZ Renewable Energy Research Unit in Arid Zones El-Oued University.
Barsoni, A.L.
Esro et al., “Solution processed SnO2:Sb transparent conductive oxide as an alternative to indium tin oxide for applications in organic light emitting diodes,” J.
Online since: February 2011
Authors: Tong Min Wang, Jun Xu, Zong Ning Chen, Jing Zhu, Hong Wang Fu, Ting Ju Li
Introduction
In the past decade, considerable efforts have been made on the TiB2 particulate reinforced Al/Al alloy composites.
In-situ TiB2/Al alloy composites are prepared by the in-situ reactions between the elements or compounds and the molten Al alloy.
We can see that α-Al grains are fine and spherical.
The average size of α-Al grains was calculated to be 47.4μm.
References [1] N.El-Mahallawy, M.A.
In-situ TiB2/Al alloy composites are prepared by the in-situ reactions between the elements or compounds and the molten Al alloy.
We can see that α-Al grains are fine and spherical.
The average size of α-Al grains was calculated to be 47.4μm.
References [1] N.El-Mahallawy, M.A.
Online since: October 2013
Authors: Emad A. Badawi, M.A. Abdel-Rahman, Alaa El-Deen A. El-Nahhas
El-Nahhas
Faculty of Science, Physics Department, El-Minia University,
PO 61519 El-Minia,
Egypt
*emadbadawi@yahoo.com
Keywords: Age Hardening, HV Values, Plastic Deformation, Positron Annihilation Lifetime Spectroscopy
Abstract
The aim of this work is to establish a correlation coefficient between the positron annihilation lifetime technique (PALS) and the Vickers hardness for the heat treatable aluminum alloys (6066, 6063).The potential of positron annihilation spectroscopy in the study of light alloys is illustrated with special regards to age hardening, severe plastic deformation, annealing and quenching in aluminum alloys.
This time is short in comparison to the time spent by the positron in the metal before being annihilated, which is typically above 100 ps (e.g., 162 ps in Al).
Table 1 Chemical compositions of 6066, 6063 aluminum alloys Alloy Si Mg Cu Mn Cr Al 6066 0.9-1.8 0.8-1.4 0.7-1.2 0.6-1.1 0.4Max balance 6063 0.2-0.6 0.45-0.90 0.1Max 0.1Max 0.1Max balance If the metal contains defects such as vacancies, vacancy clusters (including voids and bubbles) and dislocations. i.e., regions of less than average atomic density, positrons may become trapped, i.e., localized at these defects.
A sandwich configuration has been used for Al alloy sample measurements.
This time is short in comparison to the time spent by the positron in the metal before being annihilated, which is typically above 100 ps (e.g., 162 ps in Al).
Table 1 Chemical compositions of 6066, 6063 aluminum alloys Alloy Si Mg Cu Mn Cr Al 6066 0.9-1.8 0.8-1.4 0.7-1.2 0.6-1.1 0.4Max balance 6063 0.2-0.6 0.45-0.90 0.1Max 0.1Max 0.1Max balance If the metal contains defects such as vacancies, vacancy clusters (including voids and bubbles) and dislocations. i.e., regions of less than average atomic density, positrons may become trapped, i.e., localized at these defects.
A sandwich configuration has been used for Al alloy sample measurements.